Revert "Minimal changes to support multi-display HWC"

This reverts commit bddd724b178b1263c16e41b564165fcd0e93ff83

Change-Id: Ib7db20b5b3de4779b6e173473a33976ae398abd4
diff --git a/opengl/tests/hwc/hwcTestLib.cpp b/opengl/tests/hwc/hwcTestLib.cpp
index d567e6e..c6dbe9d 100644
--- a/opengl/tests/hwc/hwcTestLib.cpp
+++ b/opengl/tests/hwc/hwcTestLib.cpp
@@ -399,12 +399,12 @@
  * Dynamically creates layer list with numLayers worth
  * of hwLayers entries.
  */
-hwc_display_contents_1_t *hwcTestCreateLayerList(size_t numLayers)
+hwc_layer_list_1_t *hwcTestCreateLayerList(size_t numLayers)
 {
-    hwc_display_contents_1_t *list;
+    hwc_layer_list_1_t *list;
 
-    size_t size = sizeof(hwc_display_contents_1_t) + numLayers * sizeof(hwc_layer_1_t);
-    if ((list = (hwc_display_contents_1_t *) calloc(1, size)) == NULL) {
+    size_t size = sizeof(hwc_layer_list_1_t) + numLayers * sizeof(hwc_layer_1_t);
+    if ((list = (hwc_layer_list_1_t *) calloc(1, size)) == NULL) {
         return NULL;
     }
     list->flags = HWC_GEOMETRY_CHANGED;
@@ -417,13 +417,13 @@
  * hwcTestFreeLayerList
  * Frees memory previous allocated via hwcTestCreateLayerList().
  */
-void hwcTestFreeLayerList(hwc_display_contents_1_t *list)
+void hwcTestFreeLayerList(hwc_layer_list_1_t *list)
 {
     free(list);
 }
 
 // Display the settings of the layer list pointed to by list
-void hwcTestDisplayList(hwc_display_contents_1_t *list)
+void hwcTestDisplayList(hwc_layer_list_1_t *list)
 {
     testPrintI("  flags: %#x%s", list->flags,
                (list->flags & HWC_GEOMETRY_CHANGED) ? " GEOMETRY_CHANGED" : "");
@@ -494,7 +494,7 @@
  * Displays the portions of a list that are meant to be modified by
  * a prepare call.
  */
-void hwcTestDisplayListPrepareModifiable(hwc_display_contents_1_t *list)
+void hwcTestDisplayListPrepareModifiable(hwc_layer_list_1_t *list)
 {
     uint32_t numOverlays = 0;
     for (unsigned int layer = 0; layer < list->numHwLayers; layer++) {
@@ -522,7 +522,7 @@
  *
  * Displays the handles of all the graphic buffers in the list.
  */
-void hwcTestDisplayListHandles(hwc_display_contents_1_t *list)
+void hwcTestDisplayListHandles(hwc_layer_list_1_t *list)
 {
     const unsigned int maxLayersPerLine = 6;